Editor’s Note: On April 26, National Geographic published photos by Beth Moon on nationalgeographic.com, depicting the world’s oldest trees against the night sky. Significant concerns about the veracity of the images have been raised on photo industry blogs and social media. National Geographic has a strict policy against photo manipulation, and we have initiated an investigation to confirm whether the images comply with our policies. We have removed the images and related story pending the outcome of our investigation. This step does not mean we have determined that the images do not meet our standards, as we are unable to make a determination at this time. The images will not be re-posted unless they meet National Geographic’s standards.